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Qi X, Xiong X, Liu M, Zhang Y, Zhang X, Jiang P, Wu Y, Guo X, Tong H. Cellulose nanofibril/titanate nanofiber modified with CdS quantum dots hydrogel with 3D porous structure: A stable photocatalytic adsorbent for Cr(VI) removal. Carbohydr Polym 2024; 326:121623. [PMID: 38142100 DOI: 10.1016/j.carbpol.2023.121623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/27/2023] [Accepted: 11/19/2023] [Indexed: 12/25/2023]
Abstract
A novel cellulose nanofibril/titanate nanofiber modified with CdS quantum dots hydrogel (CTH) was synthesized as an effective, stable, and recyclable photocatalytic adsorbent using cellulose nanofibril (CN), titanate nanofiber (TN), and CdS quantum dots. Within the CTH structure, CN formed an essential framework, creating a three-dimensional (3D) porous structure that enhanced the specific surface area and provided abundant adsorption sites for Cr(VI). Simultaneously, TN modified with CdS quantum dots (TN-CdS) served as a nanoscale Z-type photocatalyst, facilitating the efficient separation of photoinduced electrons and holes, further increasing the photocatalytic efficiency. The morphological, chemical, and optical properties of CTH were thoroughly characterized. The CTH demonstrated the maximum theoretical adsorption capacity of 373.3 ± 14.2 mg/g, which was 3.4 times higher than that of CN hydrogel. Furthermore, the photocatalytic reduction rate constant of the CTH was 0.0586 ± 0.0038 min-1, which was 6.4 times higher than that of TN-CdS. Notably, CTH displayed outstanding stability, maintaining 84.9 % of its initial removal efficiency even after undergoing five consecutive adsorption-desorption cycles. The remarkable performance of CTH in Cr(VI) removal was attributed to its 3D porous structure, comprising CN and TN-CdS. These findings provide novel insights into developing a stable photocatalytic adsorbent for Cr(VI) removal.
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Affiliation(s)
- Xinmiao Qi
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xiang Xiong
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Meng Liu
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yuting Zhang
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xuefeng Zhang
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Ping Jiang
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yiqiang Wu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xin Guo
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China.
| | - Haijie Tong
- Institute of Surface Science, Helmholtz-Zentrum Hereon, Max-Planck-Str. 1, Geesthacht 21502, Germany.
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Qi X, Peng J, Zhang X, Cai H, Huang Y, Qiao J, Guo Y, Guo X, Wu Y. Computer chip-inspired design of nanocellulose/carbon dots hydrogel as superior intensifier of nano-sized photocatalyst for effective Cr(VI) removal. JOURNAL OF HAZARDOUS MATERIALS 2023; 446:130689. [PMID: 36586334 DOI: 10.1016/j.jhazmat.2022.130689] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/26/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
Hydrogel, a common carrier of photocatalyst that suffers from compromised catalytic efficiency, is still far from practical application. Herein, based on "computer chip-inspired design", a novel nanocellulose/carbon dots hydrogel (NCH) was fabricated as superior intensifier instead of common carrier of sodium titanate nanofibre (STN), where carbon dots (CDs) enhanced amino group-induced adsorption for Cr(VI), promoted photocatalytic properties of STN via transferring the photogenerated electron-hole pairs and improved amino group-induced desorption for reduced product (Cr(III)) via electrostatic repulsion, showing an efficiency of 1 + 1 > 2. Adsorption and photocatalysis experiments demonstrated superior removal performance of the NCH incorporating STN, as shown by theoretical maximum adsorption capacity of 425.74 mg/g and kinetic constant of 0.0374 min-1 in the photocatalytic process, which was nearly 6.6 and 7.3 times of STN. A series of experiments was conducted to confirm the novel mechanism of CDs-enhanced adsorption-photocatalysis-desorption synergy. This work not only provides new insights into the fabrication of a superior intensifier for nanosized photocatalyst, but also proposes one new mechanism of CDs-enhanced adsorption-photocatalysis-desorption synergy, which is helpful for designing and optimizing nanosized photocatalyst.
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Affiliation(s)
- Xinmiao Qi
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Junwen Peng
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xuefeng Zhang
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Haoxuan Cai
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yong Huang
- Joint International Research Laboratory of Biomass Energy and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jianzheng Qiao
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yucong Guo
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xin Guo
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China.
| | - Yiqiang Wu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
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Pan T, Li G, Li R, Cui X, Zhang W. Selective Removal of Boron from Aqueous Solutions Using ECH@NGM Aerogels with Excellent Hydrophilic and Mechanical Properties: Performance and Response Surface Methodology Analysis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14879-14890. [PMID: 36399773 DOI: 10.1021/acs.langmuir.2c02566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The remediation of environmental boron contamination has received extensive research attention. The adsorbent ECH@NGM aerogel with high hydrophilic and mechanical properties was synthesized to remove boron. The ECH@NGM aerogel had a high adsorption capacity of 81.11 mg/g, which was 14.50% higher than that of commercial boron-selective resin Amberlite IRA743. The Freundlich model and pseudo-second-order model described the adsorption behavior well. In addition, the response surface methodology (RSM) could predict the experimental outcomes and optimize the reaction conditions, and X-ray photoelectron spectroscopy (XPS) and control tests were utilized to investigate probable adsorption mechanisms. These data showed that the B ← N coordination bond was the primary adsorption force. The adsorbent had good resistance to interference from coexisting salts, high reusability, good adsorption performance even after five reuse cycles, and a high desorption rate in a relatively short time. The adsorption performance in real brines could be maintained at 80%. Therefore, this work not only provided ECH@NGM aerogels for the removal of boron from brine but also elucidated the main adsorption processes between N-containing adsorbents and boron, facilitating the design of future adsorbents for boron removal.
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Affiliation(s)
- Tongtong Pan
- College of Chemical Engineering, Qinghai University, Xining810016, China
| | - Gan Li
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing100029, China
| | - Rujie Li
- College of Chemical Engineering, Qinghai University, Xining810016, China
| | - Xiangmei Cui
- College of Chemical Engineering, Qinghai University, Xining810016, China
| | - Weidong Zhang
- College of Chemical Engineering, Qinghai University, Xining810016, China
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Hoang AT, Kumar S, Lichtfouse E, Cheng CK, Varma RS, Senthilkumar N, Phong Nguyen PQ, Nguyen XP. Remediation of heavy metal polluted waters using activated carbon from lignocellulosic biomass: An update of recent trends. CHEMOSPHERE 2022; 302:134825. [PMID: 35526681 DOI: 10.1016/j.chemosphere.2022.134825] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 04/25/2022] [Accepted: 04/29/2022] [Indexed: 06/14/2023]
Abstract
The use of a cheap and effective adsorption approach based on biomass-activated carbon (AC) to remediate heavy metal contamination is clearly desirable for developing countries that are economically disadvantaged yet have abundant biomass. Therefore, this review provides an update of recent works utilizing biomass waste-AC to adsorb commonly-encountered adsorbates like Cr, Pb, Cu, Cd, Hg, and As. Various biomass wastes were employed in synthesizing AC via two-steps processing; oxygen-free carbonization followed by activation. In recent works related to the activation step, the microwave technique is growing in popularity compared to the more conventional physical/chemical activation method because the microwave technique can ensure a more uniform energy distribution in the solid adsorbent, resulting in enhanced surface area. Nonetheless, chemical activation is still generally preferred for its ease of operation, lower cost, and shorter preparation time. Several mechanisms related to heavy metal adsorption on biomass wastes-AC were also discussed in detail, such as (i) - physical adsorption/deposition of metals, (ii) - ion-exchange between protonated oxygen-containing functional groups (-OH, -COOH) and divalent metal cations (M2+), (iii) - electrostatic interaction between oppositely-charged ions, (iv) - surface complexation between functional groups (-OH, O2-, -CO-NH-, and -COOH) and heavy metal ions/complexes, and (v) - precipitation/co-precipitation technique. Additionally, key parameters affecting the adsorption performance were scrutinized. In general, this review offers a comprehensive insight into the production of AC from lignocellulosic biomass and its application in treating heavy metals-polluted water, showing that biomass-originated AC could bring great benefits to the environment, economy, and sustainability.
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Affiliation(s)
- Anh Tuan Hoang
- Institute of Engineering, HUTECH University, Ho Chi Minh City, Viet Nam.
| | - Sunil Kumar
- CSIR-NEERI, Nehru Marg, Nagpur, 440 020, India
| | - Eric Lichtfouse
- Aix-Marseille University, CNRS, IRD, INRA, CEREGE, Aix-en-Provence, 13100, France.
| | - Chin Kui Cheng
- Department of Chemical Engineering, College of Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Center for Catalysis and Separation (CeCaS), Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
| | - Rajender S Varma
- Sustainable Technology Division, National Risk Management Research Laboratory, U.S. Environmental Protection Agency, 26 West M.L.K. Drive, MS 443, Cincinnati, OH, 45268, United States
| | - N Senthilkumar
- Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, 602105, India
| | - Phuoc Quy Phong Nguyen
- PATET Research Group, Ho Chi Minh City University of Transport, Ho Chi Minh City, Viet Nam
| | - Xuan Phuong Nguyen
- PATET Research Group, Ho Chi Minh City University of Transport, Ho Chi Minh City, Viet Nam.
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Wang Y, Li K, Fang D, Ye X, Liu H, Tan X, Li Q, Li J, Wu Z. Ammonium molybdophosphate/metal-organic framework composite as an effective adsorbent for capture of Rb+ and Cs+ from aqueous solution. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122767] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Arumugasamy SK, Chellasamy G, Sekar S, Lee S, Govindaraju S, Yun K. TriMOF synergized on the surface of activated carbon produced from pineapple leaves for the environmental pollutant reduction and oxygen evolution process. CHEMOSPHERE 2022; 286:131893. [PMID: 34403903 DOI: 10.1016/j.chemosphere.2021.131893] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/02/2021] [Accepted: 08/11/2021] [Indexed: 06/13/2023]
Abstract
Facile and modest synthesis of significantly effective and less-cost catalysts for environmental pollutant degradation and oxygen evolution holds substantial potential in environmental and energy fields. Hereby, Trimetallic organic frameworks (TriMOF) consisting of Fe, Co, and Zn synergized on the surface of activated carbon (AC) from pineapple leaves tend to show exponential catalytic activity due to the more excellent ionic conductivity, catalytic stability and multiple active sites provided by different metal precursors. Furthermore, the developed nanocomposite was coated on the stainless-steel electrode substrate at room temperature, delivering greater electrocatalytic surface area and numerous active sites. The oxidation reaction kinetics drives the catalytic reduction of 4-nitrophenol to 4-aminophenol with a minimal time of 12 min @ >97 % efficiency. Furthermore, on electrocatalytic oxidation of water splitting process due to the presence of multiple metallic, active sites, the overpotential is at 370 mV having Tafel slope of 40 mV/dec and electrochemically active surface area of is 9.9 mF/cm2. This superior catalytic reduction of 4-nitrophenol and electrocatalytic water oxidation process is attributed to the developed composite's active centre and conductivity.
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Affiliation(s)
- Shiva Kumar Arumugasamy
- Department of Bionanotechnology, Gachon University, Seongnam-daero, Gyeonggi-do, 13120, Republic of Korea
| | - Gayathri Chellasamy
- Department of Bionanotechnology, Gachon University, Seongnam-daero, Gyeonggi-do, 13120, Republic of Korea
| | - Sankar Sekar
- Department of Semiconductor Science, Dongguk University, Seoul, 04620, Republic of Korea; Quantum-functional Semiconductor Research Centre, Dongguk University, Seoul, 04620, Republic of Korea
| | - Sejoon Lee
- Department of Semiconductor Science, Dongguk University, Seoul, 04620, Republic of Korea; Quantum-functional Semiconductor Research Centre, Dongguk University, Seoul, 04620, Republic of Korea
| | - Saravanan Govindaraju
- Department of Bionanotechnology, Gachon University, Seongnam-daero, Gyeonggi-do, 13120, Republic of Korea.
| | - Kyusik Yun
- Department of Bionanotechnology, Gachon University, Seongnam-daero, Gyeonggi-do, 13120, Republic of Korea.
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Wang Q, Zhang X, Wang F, Xie Y, Wang C, Zhao J, Yang Q, Chen Z. Egg yolk/ZIF-8/CLPAA composite aerogel: Preparation, characterization and adsorption properties for organic dyes. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122158] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Fang D, Wang Y, Liu H, Zhang H, Ye X, Li Q, Li J, Wu Z. Efficient extraction of Rb+ and Cs+ by a precipitation flotation process with ammonium phosphowolframate as precipitant. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125581] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Wang Q, Lei L, Wang F, Chen C, Kang X, Wang C, Zhao J, Yang Q, Chen Z. Preparation of egg white@zeolitic imidazolate framework-8@polyacrylic acid aerogel and its adsorption properties for organic dyes. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121656] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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